EP0374128A2 - Méthode d'èmission et de reception de signaux de télévsion couleur sur deux canaux pour la transmission par satellite et dispositif associé - Google Patents

Méthode d'èmission et de reception de signaux de télévsion couleur sur deux canaux pour la transmission par satellite et dispositif associé Download PDF

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Publication number
EP0374128A2
EP0374128A2 EP90101121A EP90101121A EP0374128A2 EP 0374128 A2 EP0374128 A2 EP 0374128A2 EP 90101121 A EP90101121 A EP 90101121A EP 90101121 A EP90101121 A EP 90101121A EP 0374128 A2 EP0374128 A2 EP 0374128A2
Authority
EP
European Patent Office
Prior art keywords
transmitted
channel
input
band
transmitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90101121A
Other languages
German (de)
English (en)
Other versions
EP0374128A3 (fr
Inventor
Paolo D'amato
Rolando Salvadorini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rai Radiotelevisione Italiana SpA
Original Assignee
Rai Radiotelevisione Italiana SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from IT22276/82A external-priority patent/IT1151901B/it
Application filed by Rai Radiotelevisione Italiana SpA filed Critical Rai Radiotelevisione Italiana SpA
Priority to EP19900101121 priority Critical patent/EP0374128A3/fr
Publication of EP0374128A2 publication Critical patent/EP0374128A2/fr
Publication of EP0374128A3 publication Critical patent/EP0374128A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/24—High-definition television systems
    • H04N11/26—High-definition television systems involving two-channel transmission

Definitions

  • the present invention relates to the transmission and reception of color television signals.
  • the method of transmitting color television signals on two channels according to the invention is characterized in that it comprises the steps of transmitting the luminance information in the whole available band on the first channel and the R-Y and B-Y chrominance information in the whole available band on the second channel.
  • Fig. 1 a non compatible apparatus with time division multiplex in the channel B.
  • This apparatus is provided for the transmission on the channel A of the lumi­nance information in the whole available band and the trans­mission on the channel B of the chrominance (R-Y B-Y) infor­mation in the whole available band (by available band is meant the portion not occupied by audio subcarriers) by a time division multiplex, i.e. one of the two chrominance components is transmitted in the first half of the active line and the other component in the second half.
  • the feature of the apparatus of Fig. 1 is that it com­prises in the transmitter 14 a compressor 15 and in the receiver 16 an expander 17 whose two outputs are connected to two inputs of a matrix 10.
  • the compressor generates the signal shown in Fig. 2.
  • the synchronisms are those of a normal black and white video signal but the line blanking is shifted to the "grey" level (0,35 V) inasmuch as the U and V signals are at a O average value.
  • the Y, U and V signals are those conventional of PAL.
  • the shape of the synchronizing signals can be changed.
  • FIG. 3 an apparatus is shown providing the non compatible version of the proposed system with frequency sharing multiplex in the channel B.
  • This apparatus is prov­ided for the transmission on the channel A of the luminance information in the whole available band (like the apparatus of Fig. 1) and for the transmission on the channel B of the chrominance (R-Y, B-Y) information in the whole available band by means of a frequency sharing multiplex, i.e. one of the chrominance components is transmitted in baseband, i.e.
  • the feature of the apparatus of Fig. 3 is that it comprises in the transmitter 19 a modulator 20 having the output connected to an input of an adder 21 connected with a second input to the output of a low pass filter 27 which limits the spectrum of the baseband transmitted component, and in the receiver 22 a demodulator 23 having the output connected to a matrix 24 and the input connected to the output of a high pass filter 25 which has, in turn, the input connected to the receiving apparatus of the channel B to which also the input of a low pass filter 26 is connected having the output connected to a second input of the matrix 24.
  • the video signal is shown in Fig. 5.
  • the synchronisms are of the conventional type, but the line blanking is raised to + 0,35 V inasmuch as the V signal is at a zero average value.
  • a frequency burst f C is present, situated in the same position as the conventional PAL burst. The phase of this burst is constant and equal to that of the subcarrier f C .
  • the burst is used to rebuild the subcarrier f C supplied to a conventional synchronous demodulator.
EP19900101121 1982-07-07 1983-06-28 Méthode d'èmission et de reception de signaux de télévsion couleur sur deux canaux pour la transmission par satellite et dispositif associé Withdrawn EP0374128A3 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19900101121 EP0374128A3 (fr) 1982-07-07 1983-06-28 Méthode d'èmission et de reception de signaux de télévsion couleur sur deux canaux pour la transmission par satellite et dispositif associé

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT22276/82A IT1151901B (it) 1982-07-07 1982-07-07 Sistema di trasmissione e di ricezione di segnali televisivi a colori su due canali per la radiodiffusione da satellite ed impianto per l'attuazione del sistema
IT2227682 1982-07-07
EP19900101121 EP0374128A3 (fr) 1982-07-07 1983-06-28 Méthode d'èmission et de reception de signaux de télévsion couleur sur deux canaux pour la transmission par satellite et dispositif associé

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP83830134A Division EP0099341B1 (fr) 1982-07-07 1983-06-28 Procédé d'émission et de réception de signaux de télevision compatibles en couleur sur deux canaux pour la transmission par satellite et dispositif pour la mise en oeuvre de ce procédé
EP83830134.9 Division 1983-06-28

Publications (2)

Publication Number Publication Date
EP0374128A2 true EP0374128A2 (fr) 1990-06-20
EP0374128A3 EP0374128A3 (fr) 1990-09-12

Family

ID=26124862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900101121 Withdrawn EP0374128A3 (fr) 1982-07-07 1983-06-28 Méthode d'èmission et de reception de signaux de télévsion couleur sur deux canaux pour la transmission par satellite et dispositif associé

Country Status (1)

Country Link
EP (1) EP0374128A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2026577A1 (fr) * 2007-08-08 2009-02-18 TRUMPF Medizin Systeme GmbH + Co. KG Procédé destiné à la transmission d'un signal vidéo d'une caméra installée sur un système d'éclairage OP et système d'éclairage OP

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234323A (en) * 1960-10-27 1966-02-08 Sony Corp Picture signal recording system
GB2071960A (en) * 1980-02-25 1981-09-23 Rca Corp Transmission system with television signal time-division multiplexing
EP0055098A2 (fr) * 1980-12-19 1982-06-30 Matsushita Electric Industrial Co., Ltd. Appareil d'enregistrement et de reproduction d'un signal vidéo

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234323A (en) * 1960-10-27 1966-02-08 Sony Corp Picture signal recording system
GB2071960A (en) * 1980-02-25 1981-09-23 Rca Corp Transmission system with television signal time-division multiplexing
EP0055098A2 (fr) * 1980-12-19 1982-06-30 Matsushita Electric Industrial Co., Ltd. Appareil d'enregistrement et de reproduction d'un signal vidéo

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON COMMUNICATIONS, vol. COM-29, no. 12, December 1981, pages 1882-1891, IEEE, New York, US; T. FUJIO: "High definition television systems: Desirable standards, signal forms, and transmission systems" *
SMPTE JOURNAL, vol. 89, no. 8, August 1980, pages 579-589, Scardale, US; T. FUJIO et al.: "High-definition television system - signal standard and transmission" *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2026577A1 (fr) * 2007-08-08 2009-02-18 TRUMPF Medizin Systeme GmbH + Co. KG Procédé destiné à la transmission d'un signal vidéo d'une caméra installée sur un système d'éclairage OP et système d'éclairage OP

Also Published As

Publication number Publication date
EP0374128A3 (fr) 1990-09-12

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